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Space Shuttle Endeavour Launches Under Command Of Astronaut Mark Kelly

CAPE CANAVERAL, FL - MAY 16: Space shuttle Endeavour crew Commander Mark Kelly ( R) and Pilot Greg H. Johnson stand together after walking out of the Operations and Checkout Building to the waiting Astrovan for the ride to pad 39A at the Kennedy Space Center on May 15, 2011 in Cape Canaveral, Florida. Commander Kelly's wife congresswoman Gabrielle Giffords, who was shot in the head at a meet-and-greet in her hometown of Tucson, Arizona, is attending the launch. NASA has given Endeavour the all clear to embark on its final flight to the International Space Station on May 16. STS-134 will deliver the Express Logistics Carrier-3 (ELC-3) and the Alpha Magnetic Spectrometer (AMS-2) to the International Space Station. (Photo by Joe Raedle/Getty Images)

Endeavour's final launch

Second-to-last NASA shuttle blasts off.